I just don't get one thing.. Don't you have dev and staging server, where you co... | Hacker News

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mariusz79 on June 10, 2014 | parent | context | favorite | on: Tell HN: The site was offline. What changed?

I just don't get one thing.. Don't you have dev and staging server, where you could develop, test, and pre-deploy everything without shutting down the website?

kogir on June 10, 2014 [–]

Online data migrations are complicated and error prone. We deemed it not worth it.

All the code was tested before going live, but at some point you actually have to move and re-format all 8.5 million files.

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